Ventilator devices



Nov. 17, 1959 H. MoHRMAN 2,912,915

VENTILATOR DEVICES Filed Dec. 26, 1958 I 2 Sheets-Sheet l INVENTO 147 70m/EV Nov. 17, 1959 v H. MOHRMAN 2,912,916

VENT-ILATOR DEVICES Filed Dec. 26, 1958 2 Sheets-Sheet 2 INVENTOR.

fr( Z. Waff/@M4N BY United States Patent() VENTILATOR DEVICES Harry L. Mohrman, Caldwell, NJ., assignor to Chelsea Products, Incorporated, Plainfield, NJ., a corporation of New Jersey Application December 26, 1958, Serial No. 783,017 7 Claims. (Cl. 98-43) This invention relates to ventilator devices adapted to be secured to roofs or side walls of building structures in registry with exhaust openings therein. The invention is designed to provide a simple, highly practical and efficient structure of the character described which may be readily secured to the exhaust opening and wherein the entire load of the upper portion of the ventilator is supported in a novel arrangement incorporating novel means for assembly of the parts and maintaining them in the desired predetermined relationship for efficient operation and to safeguard them from contamination and damage 1n use.

The drawings show representative forms illustrative of the invention for eectuating the foregoing and other objects of the invention, as will become apparent from the drawings, wherein:

Fig. l is a fragmentary, perspective view of a device embodying the invention,

Fig. 2 is a vertical elevational, fragmentary sectional view thereof, and

Fig. 3 is a vertical, elevational, fragmentary sectional view of another form of said device.

In the drawings, wherein similar reference characters indicate like parts throughout the several views, the ventilator device is shown to comprise a hollow support base or shell 11 adapted to be secured to a structure such as the object 12 (which, in Fig. 1 may be the roof 12 of a building, in Fig. 3, the side wall of a building) in registry with an exhaust opening therein.

Motor housing 14 is, pursuant to the invention, secured to the hollow support base 11 in aligned, spaced relation, the exhaust fan 15 being disposed intermediate the motor housing and shell 11 and depending, as by means 16, from shaft 17, which may be the armature shaft of motor 18 (Fig. 2) or a motor driven shaft. The motor 18 (Fig. 2) may be secured to suitable bracket means 19 which in turn may be secured directly to the motor housing or indirectly as at 30 to a member 27 which in turn is secured to motor housing 14. An apertured structural member, such as perforated band 20 is disposed intermediate the motor housing 14 andthe shell 11 and means are provided, engaging the band, motor housing and shell, proportioned to encompass the fan in spaced marginal relation, connecting the band 20 to the motor housing and shell and maintaining the housing and shell spaced and in alignment with the housing 14, motor 18 and fan 15 solely supported by band 20. The band 20 is preferably made'of metal or other slightly yieldable material, provided with perforations 21 disposed equidistantly throughout the entire area thereof; it may be of wire mesh or expanded metal, band 20 as shown in the drawing being representative of the forms 2,912,9l6 Patented Nov. 17, 1959 ICC mentioned. By the arrangement described, the parts may be assembled in a convenient and essentially fool-proof manner, the band 20, being the sole connecting means for the upper and lower parts of the ventilator, yielding slightly under conditions of stress and strain incident to torque and other operative conditions encountered in use, while positively connecting said parts at all times. As the preforations 21 are provided throughout the band, the air 13 to be exhausted will readily flow therethrough as indicated by the dotted arrows 28 (Figs. 2 and 3). At the same time, the band 20 assures against return flow or entry of extraneous matter.

The motor housing and shell are connected to the marginal portions 22, 23 of the band 20, essentially, and except for said marginal portions, the entire area of the band is provided with perforations 21 and has the flexing characteristics and other characteristics and properties above mentioned. The means which so marginally engage the band, motor housing and shell, may comprise a pair of rings or brackets 24, 25 which are preferably L- shaped in section (Fig. l), one leg of each ring being telescopically secured to said band 20 and the other leg to the motor housing 14 or support shell 11 respectively, by bolts 26, by welding or other means.

A deector dome 27 is secured to the motor housing 14 as at 29 in overlying relation to the perforated band 20 so as to deflect air exhausted therefrom outwardly of said device (arrow 28); if desired the connection of members 14 and 27 may be by bolt and spacer means 30, 29 so that air may flow therebetween as noted at 31 in Fig. 1, passing as at 3S thence outwardly of the device. If desired, a separator. plate 32 may be secured to the motor housing 14 and provided with a medial aperture 33 through which shaft 17 may freely pass (Fig. 2).

The operation of the device of the invention will be apparent to those skilled in this art from the disclosure herein and examples given and the application of the invention to other forms of exhaust devices will thus be apparent and within the scope and purview of the invenvtion as recited in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A ventilator device comprising a hollow support extending from a structure, a motor, a housing for said motor, an exhaust fan operable by said motor and dis posed between it and said support, a metal structural member enclosing said fan and supporting said housing from said hollow support, said structural member being provided with perforations for a substantial portion of its area, to facilitate the exhausting of said air therethrough, while preventing the entrance of extraneous matter through said portion into the interior of said structural member, and thereby into said device, and means securing said structural member to the hollow support.

2. A ventilator device as set forth in claim l, wherein an air deflector dome is secured to the motor housing and the structural member, and overlies said structural member in spaced relationship thereto, so as to deflect air exhausted therefrom outwardly of said device.

3. A ventilator device as set forth in claim l, wherein said perforations are spaced equidistantly over the entire area of said structural member.

4. A ventilator device as set forth in claim l, wherein there is a separator plate intermediate the fan and motor housing and provided with an aperture through which the motor shaft extends.

3 v 4 5. A ventilator device as set forth in claim 1, wherein tural member, and the other legs of said rings are secured there is a pair of rings connected, respectively, to the to the motor housing and hollow support, respectively.

opposite margins of the structural member, and means Refe nce Cted 'n the le of this atent connecting one of said rings to the hollow support and re s l l p the other ring to the motor housing. 5 UNITED STATES PATENTS 6. A ventilator device as set forth in claim 5, wherein 1,720,364 Holmes July 9, 1929 each of said pair of rings comprises a anged member. 2,280,495 Martinet Apr. 21, 1942 7. A ventilator device as set forth in Claim 5, wherein 2,767,904 Doyle Oct. 23, 1956 each ring is L-shaped in cross-section, one leg of each of 2,805,615 Rudy Sept. l0, 1957 said rings is telescopically secured to the apertured Struc- 10 2,843,314 Hansen July 15, 1958 

